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What event accompanies energy absorption by chlorophyll or other pigment molecules of the antenna complex?
The event that accompanies energy absorption by chlorophyll or other pigment molecules of the antenna complex is the excitation of electrons. When light energy is absorbed by the pigment molecules, their electrons get excited to a higher energy state. This excited state is essential for the subsequent transfer of energy to the reaction center of the photosystem for further processing.
Why do Electrons in pigment molecules become excited?
According to Bohr's theories the electrons in the metal ions are "excited" due to the absorption of a quantum or multiple quanta of light
What excited the chloroplast does step one of photosynthesis take place?
It is the pigment. It emits electrons after exited.
What heppens when light strikes green plant pigments?
electrons become excited
What happens when light hits a pigment?
When a chlorophyll molecule absorbs a photon of light, Photons strike the "antenna" of the chlorophyll molecule. This causes electrons in the photo-reaction centers that are attached to the antennas to become excited and move to a higher energy level. That's photoexcitation. The valence electrons in Magnesium (part of the chlorophyl molecule) jump to an excited state.
Where do the electrons used in the light dependent process come from?
A photon of light strikes chlorophyll and an excited electron is energized to a higher level and enters the transport chain. Now, here is the ultimate reason plants use water. ( aside from turgidity and other processes ) The plant " cracks " water to get electrons to replace the electrons excited from the pigment of chlorophyll. The oxygen then becomes so much waste.
When a pigment molecule absorbs a photon one of its electrons?
the outer electrons which are weakly attracte towards nucleus of a pigment can absorb a photon and gets exited to its unstable higher levels. It releases more energy when it gets stabilized to its normal state. This energy can be trapped by the electron of next pigment molecules. In this way the energy gets transfered from one to other.
The pigment that increase when the skin is exposed to sunlight?
This pigment is called melanin.
Why don't chlorophyll molecules run out of electrons?
Chlorophyll molecules do not run out of electrons because during the process of photosynthesis, they receive electrons from water molecules, which are continuously being split to release electrons. This continuous flow of electrons helps chlorophyll molecules maintain their electron supply.
Why does a pure chlorophyll flouresces when exposed to light?
Chlorophyll molecules become excited when photons of light strike them. This excitement results in valence electrons moving to a higher energy level. The electrons are transferred through many pigments called antenna pigments until they reach a pigment called the Reaction Center. Normally, the Reaction Center would pass these electrons on to an electron transport chain, but, since pure chlorophyll does not have any electron transport chains, the electrons, which are highly unstable, simply return to their original energy level. Energy is released as the return, and this energy is what we see as fluorescent light.
What is reduced by electrons in light reactions?
In light reactions of photosynthesis, electrons are reduced by the pigment molecule chlorophyll to produce NADPH and ATP. These reduced molecules carry energy and electrons to the Calvin cycle for the synthesis of carbohydrates.
What compound do plants use to make glucose molecules?
Green plants use a pigment called chlorophyll to collect sunlight and produce excited electrons that then drive a complex of other proteins to manufacture glucose. Other organisms (mostly microscopic) use other pigments of a variety of different colors in the same way.
